上海科锐驰化工装备技术有限公司

<正>专业提供粉粒体后处理工艺及设备☆低熔点物料造粒(制片)成套设备☆粉体物料干湿法造粒成套技术及设备☆干燥技术及设备☆飞灰固化成套工艺及设备☆配料、混合、粉碎等单元设备☆胶状体高分子聚合物后处理工艺及成套设备☆粉体物料球形颗粒成形工艺及设备☆化工粉体设备及成套工程☆污泥干化成套技术及设备☆自动化控制及过程装备研究     

我国丁醇及辛醇发展趋势

介绍了我国目前丁醇及辛醇的生产情况、应用领域及市场需求情况，丁醇主要用于生产增塑剂及丙烯酸酯，辛醇则主要用于生产增塑剂DOP。预计2005年及2010年我国的丁醇需求分别为550kt及750kt；辛醇的需求分别为680kt及900kt。     

意大利,英国卫生陶瓷生产技术及装备考察

从原料、泥浆及检测;卫生陶瓷成形技术及设备;卫生陶瓷干燥技术及干燥器;卫生陶瓷烧成技术及设备等四个方面简要介绍了作者考察意大利、英国卫生陶瓷生产技术及装备的情况.     

涂料文摘

丙烯酸树脂及其涂料；醇酸树脂及其涂料；含氟聚合物及其涂料；环氧树脂及其涂料；聚氨酯树脂及其涂料；聚酯树脂及其涂料     

镁及镁合金电镀与化学镀

介绍了镁及镁合金电镀与化学镀工艺流程、浸锌及直接化学镀镍等前处理工艺,以及已应用于镁及镁合金上的各种镀层.同时,对电镀及化学镀在镁及镁合金上的应用和发展状况作了简要评述.     

影响内嘴胶与气门嘴附着力的因素及改进措施

分析指出影响内嘴胶与气门嘴附着力的因素主要有气门嘴处理及保存、内嘴胶料配方及质量波动、内嘴胶垫硫化控制、工艺操作及生产环境、内嘴胶垫固定及内胎硫化等方面,通过采取妥善处理及保存气门嘴、控制内嘴胶料配方及质量波动、稳定内嘴胶垫硫化条件、严格工艺操作及环境保持、内嘴胶垫固定及内胎硫化满足工艺条件等措施,可以提高内嘴胶与气门嘴的附着力,保证内胎质量。     

道康宁硅烷和硅氧烷解决方案登陆SPECIALCHEM网站

SpecialChem是一家总部位于巴黎，创建于2000年的在线创新及解决方案交流促进商，专注于专用化学品及塑胶领域。主要市场包括：聚合物添加剂及色料、胶粘剂及密封剂、油漆、涂料及染料。通过收购OMNEXUS的服务及其电子营销活动，     

宁波鼓励资金投向精细化工等领域

近日,宁波市政府批转的<宁波市工业投资导向目录>公布了14个鼓励投资的产业领域,包括石油化工及精细化工、新材料及新能源、生物医药、装备制造及机械基础件、汽车及零部件、纺织服装、环保及资源综合利用等.     

锆及锆合金管道工程施工技术探讨

通过对锆及锆合金国内外标准及材料特性的研究,结合锆及锆合金工程实践,讨论原材料订货及检验、冷加工煨制作业可能出现的裂纹及检验要求。重点探讨了锆及锆合金工程焊接工艺评定开发,并以材质R60702为例,提出了焊接工艺参数。同时结合焊接实践,针对焊接缺陷产生的原因及种类,从焊工资格考核、焊前准备、焊接过程实施、提出对应解决方案,并对现行国家标准部分空白领域及条款,提出修订意见,为同类型锆及锆合金管道工程建设,提供了参考。     

2014第十四届中国国际石油天然气管道与储运技术装备展会

展出时间 2014年4月1～3日 展出地点 中国国际展览中心新馆（北京顺义天竺裕祥路88号）展出内容管线钢、储罐钢及钢管;制管机械、设备、机组及配件;玻璃钢、橡胶以及PE＼PVC、CPVE管道;管道施工设备及大型机具;管道检测及检漏仪表与设备,清洗设备及材料;管道焊接设备及焊接材料;海洋管道站场设备及其他接收装置;     

Polycarbonate resins

An outline of the history and manufacture of polycarbonate resins is followed by a discussion about resin product types anal their processing. The key properties of flex modulus, deflection temperature, and impact are those that make polycarbonate resins premier engineering resins. Like most other engineering plastics, polycarbonate resins' early commercial history was characterized by substitutions of polycarbonate resins for traditional materials, particularly metal and glass. Examples of applications are presented, More recently application developments involve ab initio selection of polycarbonate resins and article designs based on polycarbonate resin properties. In addition, “tailored” resins such as poly (estercarbonate) resins and polycarbonate resin blends have evolved to meet specific applications. The future growth of polycarbonate resins is predicted to feature few new resins, many new blends, and application developments using computer techniques.     

Unsaturated ester resins

Vinyl ester resins (VERs) are often described as a cross between unsaturated polyester resins and epoxy resins. VERs offer an upgrade to epoxy resins, and they tend to be selected when chemical and temperature resistance is required. This research was aimed at developing the synthesis of unsaturated ester resins (UERs), which are similar to VERs. UERs were synthesized by the addition of dihydrodicyclopentadienyl hydrogen maleate to the terminal epoxy groups in low‐molecular‐weight bisphenol A/epichlorohydrin epoxy resins. The effect of urethanization of UERs on the properties of the crosslinked polymer was also investigated. As crosslinking monomers, styrene and glycol dimethacrylates were used. The following properties of cured UERs were determined: the heat deflection temperature, alkali resistance, and the mechanical strength. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2627–2631, 2006     

Synthesis and properties of cationic resins derived from aniline-modified epoxy resins and various amines

Aniline-modified epoxy resin which contains tertiary amine in the middle of the polymer chain was synthesized by the reaction of aniline and epoxy resin. The resulting aniline-modified epoxy resin and two commercial epoxy resins with different epoxy equivalent weights were reacted with 2-ethylhexanol-blocked toluene diisocyanate (2-EH-blocked TDI) to obtain thermally crosslinkable epoxy resins. These epoxy resins were subsequently reacted with various secondary amines and partially neutralized with acetic acid to give thermally crosslinkable cationic resins. The resulting cationic resins were dissolved in suitable solvents and mixed with deionized water to form emulsions. The crosslinking properties, emulsion, and electrodeposition properties of these resins were studied in some detail. The electro-deposition yields of the emulsions prepared from aniline-modified epoxy resins were higher than those of other emulsions. The crosslinked films prepared from aniline-modified epoxy resins were also glossier than those prepared from commercial epoxy resins. High deposition yield and high glossiness were the characteristic properties of the aniline-modified epoxy resins. Thermal properties were not affected by aniline-modified epoxy resins.     

Synthesis and properties of cationic resins derived from polyether/polyester-modified epoxy resins

Four polyether and one polyester-modified cationic resins were synthesized by reacting polyether/polyester-modified epoxy resins with 2-ethylhexanol-blocked-toluene diisocyanate (2-EH-blocked TDI) and diethanolamine and subsequently neutralizing the resins with acetic acid. Four different polyethers and one polycaprolactone diol (PCP) were used to react with epoxy resin to form polyether-modified epoxy resins (1a–d) and polyester-modified epoxy resin (1e). The extent of reaction of epoxy resin and polyether or polyester was evaluated by the change of epoxy equivalent weight and the gel permeation chromatography curve of the resulting product. Cationic resins were dissolved in suitable solvents and were mixed with deionized water to form emulsions. Some factors, such as pH value of emulsion, solvent content, and applied voltage affecting the emulsion and electrodeposition properties, were investigated. Cationic resins, prepared from PPG (#1000)-modified epoxy resins, yielded a wider pH range of stable emulsion and also yielded deposited films with a pleasing appearance. PEG (#1000)-modified cationic resins produced a higher deposition yield, but higher throwing power was obtained by deposition of the PCP (#530)-modified cationic resins.     

Reactivity and spectral comparisons of alkylresorcinol laminating resins with phenolic and resorcinolic resins

Two alkylresorcinol-based laminating resins, DFK-14R and FR-100, are compared in reactivity and structure with resorcinol- and phenol-based adhesive resins. The alkylresorcinols, derived from Estonian shale oil, replace costlier, less-reactive resorcinol in adhesives in the USSR. Differential scanning calorimetry quantitates the reactivity advantage. Infrared spectroscopy and proton nuclear magnetic resonance provide spectral patterns to distinguish the alkylresorcinol resins from the families of resorcinol-and phenol-based resins. Structural features are assigned for most of the spectral absorptions, with aid from ¹³carbon nuclear magnetic resonance spectra of the shale oil resins.     

Epoxy resins from dinaphthols

Epoxy resins were prepared from di-α-naphthol(4,4′-dihydroxy-1,1′-dinaphthyl) and di-β-naphthol(2,2′-dihydroxy-1,1′-dinaphthyl). The resins consisted mainly of the reaction product of 1 mole of dinaphthol with 2 moles of epichlorhydrin. They contained chlorine, however, and were correspondingly deficient in diepoxide functionality. The resins from di-α-naphthol were crystalline, had m.p. 200°C., and were not miscible with conventional curing agents. Di-β-naphthol gave resins with softening points in the range 50–70°C., which cured with diethylenetriamine or the anhydrides of dibasic acids, giving hard but brittle products. The brittleness was not removed by curing with plasticizing curing agents, such as tetrapropenyl succinic anhydride. The cured di-β-naphthol-based resins had thermal stabilities similar to analogous epoxy resins based on bisphenol A.     

Synthesis and properties of cationic resins derived from aniline/benzylamine-modified epoxy resins and diethylamines

Aniline/benzylamine-modified epoxy resins with different molecular weights, which contain tertiary amines in the middle of the polymer chain, were synthesized by the reaction of aniline/benzylamine with epoxy resin at various molar ratios. The resulting aniline/benzylamine-modified epoxy resins were reacted with diethylamine and subsequently reacted with 2-ethylhexanol-blocked toluene diisocyanate to obtain thermally crosslinkable resins which contain tertiary amines at the end and in the middle of the polymer chain. These resins were partially neutralixed with acetic acid to give thermally crosslinkable cationic resins. The resulting cationic resins were dissolved in suitable solvents and mixed with deionized water to form various emulsions. The emulsion and electrodeposition properties of these resins were studied in some detail to compare the properties of these cationic resins. The results show that the deposition yields and throwing power of the emulsions prepared from benzylaminemodified epoxy resins are higher than those of the emulsions prepared from anilinemodified epoxy resins. The emulsion having proper pH values can give a high throwing power. High throwing power is the characteristic property of these modified cationic resins. Factors determining the throwing power and deposition yield of the emulsions were also investigated.     

Multifunctional formaldehyde resins as curing agent for epoxy resins

Formaldehyde resins (FR) at 1/1/2 molar ratios of monomers (Cl‐phenol/amino monomers/p‐formaldehyde) were synthesized under acid catalysis. The obtained resins were characterized using elemental analysis, FTIR and RMN spectroscopic methods, being used as crosslinking agents for epoxy resin formulations. The curing of epoxy resins with FR were investigated. The glass transition temperature (T_g) and decomposition behavior of crosslinked resins were studied by differential scanning calorimetry (DSC) and thermogravimetric (TGA) techniques. All DSC scans show two exothermic peaks, which implied the occurrence of cure reactions between epoxy ring and amine or carboxylic protons, in function of chemical structures of FR. The crosslinked products showed good thermal properties, high glass transitions, and low water absorption. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

高性能环氧树脂基体的发展

综述了高性能环氧树脂的制备方法和性能。介绍了几种高性能的环氧树脂固化体系 ,新型的耐湿热性的环氧树脂 ,氰酸酯改性环氧树脂 ,液晶环氧树脂 ,双马来酰亚胺改性环氧树脂等     

含磷本质阻燃环氧树脂的研究进展

综述了含磷本质阻燃环氧树脂(包括含磷协同本质阻燃体系)的发展、现状和未来趋势。与添加型阻燃剂阻燃环氧树脂相比,通过含磷环氧化合物和/或含磷固化剂把磷元素嵌入环氧树脂结构中制得的含磷本质阻燃环氧树脂,具有阻燃效率高、阻燃持久、物理力学性能不受影响、燃烧过程中毒性腐蚀性挥发物质的生成量低等优势。利用协同阻燃效应,可以进一步提高阻燃性能。但是,含磷本质阻燃环氧树脂和含磷协同本质阻燃体系存在制备工艺复杂、生产成本较高等不足。